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I 10 Second Avenue South,#D7,Pacheco,CA 94553 McCAMPBELL ANALYTICAL fNC Telephone 510-798-1620 Fax 510-798-1622 htty//www mccampbell com E-mail main@mccampbell corn GEOSOLV, Inc Client Project ID Nunan,Highway Date Sampled 08/12/97 643 Oregon Street 88,Lockeford Date Received 08/13/97 Sonoma,CA 95476 Client Contact Frank Goldman Date Extracted 08/13/97 Client P O Date Analyzed 08/13-08115197 Gasoline Range(C&C12)Volatile Hydrocarbons as Gasoline*,with Methyl tert-Butyl Ether* &BTEX* EPA methods 5030,modified 8015,and 8020 or 602,California RWQCB(5F Bay Region)method GCFID(5030) ' Lab ID Client ID Matrix TPH(g)' MTBE Benzene Toluene Ethylben- Xylenes %Recovery zene Surrogate 79734 BI-2 S 92,a ND<0 4 055 26 1 3 69 102 r r 79735 B1-3 S 860,a ND<7 8 67 32 17 82 104 � f 79736 111-4 S 2 3,a ND 041 0 074 0 066 024 100 '2 5 r 79739 B2-2 S ND ND ND ND ND ND 104 13 79740 B2-3 S ND ND ND ND ND ND 102 / F r 79743 135-3 S 3 7,a ND 0 17 0 078 016 056 102 /7 / 79744 B54 S 3200,b,1 ND<36 32 14 58 220 120# 1 79746 83-2 S 22,bd ND ( 01 I 0 056 0 17 031 106 13 79748 B6-1 S 450,e ND<0 2 ND<0 01 ND<0 01 0 15 14 99 5- r 79749 B6-2 S 9I,e ND<0 2 ND<0 03 012 010 086 98 G J ' 79751 B64 S ND ND ND 0 009 ND 0 017 98 79752 B4-1 S ND ND ND ND ND ND 98 1 79754 B4-3 S ND ND 0 006 0 006 ND 0 008 98 a ( r 79755 B3-4 S ND ND 0 005 0 007 ND 0 010 99 ZZ r Reporting Limit unless W 50 u /L 5 0 05 05 05 05 otherwise stated,ND g ' means not detected above S 1 0 mg/kg 005 0 005 0 005 0 005 0 005 the reporting limit *water and vapor samples are reported in ug/L,wipe samples in ug/wipe soil and sludge samples in mg/kg and all TCLP and SPLP extracts mug/L N cluttered chromatogram,sample peak coelutes with surrogate peak 'The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their interpretation a) unmodified or weakly modified gasoline is significant b) heavier gasoline range compounds are significant(aged gasohne7) c) lighter gasoline range compounds (the most mobile fraction) are, significant d) gasoline range compounds having broad chromatographic peaks are significant biologically altered gasoline" c) TPH pattern that does not appear to be derived from gasoline (Stoddard solvenY�), f)one to a few isolated peaks present g)strongly aged gasoline of diesel range compounds are significant, h)lighter than water immiscible sheen is present,i)liquid sample that contains greater than—5 vol %sediment,j)no recognizable pattern DHS Certification No 1644 Edward Hamilton, Lab Director